13440726467 has 4 divisors (see below), whose sum is σ = 15360830256. Its totient is φ = 11520622680.

The previous prime is 13440726463. The next prime is 13440726487. The reversal of 13440726467 is 76462704431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76462704431 = 17 ⋅4497806143.

It is not a de Polignac number, because 13440726467 - 2² = 13440726463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13440726463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960051884 + ... + 960051897.

It is an arithmetic number, because the mean of its divisors is an integer number (3840207564).

Almost surely, 2^13440726467 is an apocalyptic number.

13440726467 is a deficient number, since it is larger than the sum of its proper divisors (1920103789).

13440726467 is an equidigital number, since it uses as much as digits as its factorization.

13440726467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920103788.

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 13440726467 in words is "thirteen billion, four hundred forty million, seven hundred twenty-six thousand, four hundred sixty-seven".